prevent core dump for old getargs() with NULL arg

13d0ed13 · Guido van Rossum · c054a663 · 13d0ed13
Kaydet (Commit) 13d0ed13 authored Kas 10, 1994 tarafından Guido van Rossum
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getargs.c Python/getargs.c +7 -0

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--- a/Python/getargs.c
+++ b/Python/getargs.c
@@ -179,6 +179,13 @@ vgetargs1(args, format, va, compat)
 			return 0;
 		}
 		else if (min == 1 && max == 1) {
+			if (args == NULL) {
+				sprintf(msgbuf,
+					"%s requires at least one argument",
+					fname==NULL ? "function" : fname);
+				err_setstr(TypeError, msgbuf);
+				return 0;
+			}
 			msg = convertitem(args, &format, &va, levels, msgbuf);
 			if (msg == NULL)
 				return 1;